Custom Open-Source CNC Mill MQP
Part of the WPI undergraduate program is completing a Major Qualifying Project, or MQP. My twin brother Alex and I pitched and secured funding for our own MQP, an open source tabletop CNC machine. I started this project both because of my experience and interest in machining parts, and because I am interested in machine design as a career path. Much of the project is focused on making the open-source machine accessible and affordable, so it can be made at a budget with minimal tools. So far we have finished the CAD and running simulations, and will have the machine fully operational by Feburary 2024.
Design Highlights
The design parameters for this machine are very different than a typical CNC machine.
Affordability
The entire machine and safety components will be under $1,800.
FMEA
Utilized FMEA to ensure safe operation.
The target audience for this machine is school maker spaces, hobbyists, and school robotics teams. To make it accessible to these groups who usually don't have access to CNC technology, we focused on sourcing affordable components while still designing a machine that can achieve reasonable part tolerances.
Calculated Movement
Accessiblity
The entire machine can be made with only water jet cut parts, a drillpress, and a bandsaw.
This was achieved by a new frame construction method. We utilize square tubing screwed together for rigidity and water jet plates to ensure the linear rails and ball screws are parallel. Detailed assembly instructions will make it easier than ever for anyone online to make this machine themsevles
Calculations done to ensure properly speced components
Current Progress
We're almost done with the machine! As of Feburary 2024 we've begun testing and plan on opening it up to students to test making their own parts within the month.